Road-grading attachment



Aug. 29, 1950 A. F. BUTCH ROAD GRADING ATTACHMENT 3 Sheets-Sheet 1 FiledAug. 1, 1945 3mm ADAM F. BUTCH 3 Sheets-Sheet 2 Aug. 29, 1950 I Filed Au1, 1945 H W m M u 35 .F. M A D A .\NN

a M o m N m a m .w w Mn 0 n m a m III 7 E 7 H. m F m I l iv Ur.

Aug. 29, 1950 A. F. BUTCH ROAD GRADING ATTACHMENT Filed Aug. 1, 1945 3Sheets-Sheet 3 3mm AQAM F. BUTCH Patented Aug. 29, 1950 l ROAD-GRADINGATTACHME T v Adam EButoh;

Application August 1, 1945 582 This invention relates to road gradingappae ratus and more particularly to a; road grading attachment for amotor truck of the load-dumpe The present invention is an improve ingtype. ment over the apparatus disclosed and claimed n my co-pendingapplication ;Ser. No; 551,042, filedr August 24, 1944, now United StatesPatent No. 2,445,472.

Inasmuch as the equipment of the kind involved herein is pressure loadedby tilting of the dump truck body and also as such equipment is normallysubjected to severe conditions of service the component elements thereofmust be made rugged and durable and capable of withstanding the heavyshock loads often applied thereto. :It is accordingly one of the primaryobjects of the QL iI'QCPiQII of the arrows from the line V.V of

ig eiii i111, e e inat the drawing, the apparatus specificallyillustrated comprises a principle carrier.

frame or. boom which is made up of a. pair of spaced parallel siderailsill rigidly interconnected atthe qlltei ends by means of a heavyarcuateshaped beam H. .As illustrated, rails it may be;formedr-ofzchannel sections. and member H. ism

preferably either of I-beam or channel construeinvention to provideapparatus of the subject character which, while being of relativelysimple construction, possess adequate strength and durability forcarrying but its normal functions over long periods of service.

A further object of the invention is the pro- Vision in apparatus of thecharacter involved of an arrangement whereby the scraper blade may betilted transversely with respect to the carrier...

frame or boom which is attached to the motor truck in normal usage ofthe combined equipment. Another object of the invention is theprovision, in apparatus having the combination of elements outlinedimmediately above, of an ment is capable of moving the material beinggraded either to the right or left of the path of Operation .as desiredand, further, is capable of grading a crown either to the right or leftalso:

as desired.

In the drawing:

Figure 1 is a side elevation of a combined scarifier and gradingattachment for a motordump truck constructed in accordance with the principles of the invention;

Figure 2 is a partial plan view of the apparatus of Figure 1; p 1

Figure 3 is a fragmentary rear elevation of the apparatus of Figures 1and 2;

Figure 4 is a fragmentarysectional view taken along the line fil -IV ofFigure 1; and

Figure is f ee e eveeee .lqelsin lt tion so that the assembled frame orbOo mis of astrong andrigid nature. The forward end of this boom isadapted to be pivotally connected to apair of. spaced lugs l2 by meansof a pivot 1rodl3. Lugs ii are welded or otherwise rigidly secured tothe main frame Id of the motor truck. Spanning the side. rails H!immediately inward of the arcuate strut H is a heavy upwardly openchannel member iB and welded to this channel member is a pair ofdiagonal braces 15 and H. The outer ends of the braces are welded to theside rails Ill and at this point a third strut l8 interconnects the siderails 10. velded to depending from the. transverse member 15 is abox-like yoke 19 which anchors the lower end of the pin it. As shown,the upper endof this. pin passes through an apertureformed inthehorizontalsection of thebeam I5. Gussets 2 l rare Welded to the yokeilland also to the under .surfaceof the beam l l to rigidly brace theyoke I9.-Adjustably mounted on the beam 1! is a. fitting -21 whichcarries; and guides the 1 scraper blade in a -manner hereinafter to bedescribed. The blade; designated .by reference nuf metal 22; iswelded-or otherwise suitably secured to the front edges of a pair ofspaced parallel: l hook-like members 225 and to "reenforce the strength.of the blade 22 as well as to lend rigidity thereto web plates 2 i;maybe. welded to the rear surfaceof theblade Hand to .the side surfacesofthe members 23.

The forward ends of the members 23 are pivoted on a pin 25 which isreceived in notches 2E5 formed in the leading edges of the side platesof the y yoke 19 {in assembling theapparatus. It

should be. observed thatthepin 25 is positioned forwardly of thepinlZfland is loosely received in a block 2'! pivoted on pen 2B soxthat-thecarrier members 23 will move along with the frame lilwiil as thelatteris pulled by the motor truck. There. is thus "provided a loosepulling connection: between the frame Ill-l8 and the scraper blade.relative to the frame as will be understood.

Secured toqthe fitting zl' isa channel mem- 1 her.

. ext n n spaced :parallelb. 1;

3 arms 29 between the upper ends of which is positioned an aperturedmember 30 for receiving a shaft 3|. Pivotally mounted between the sidewalls of the channel 28 is a double bellcrank lever 32, the shortupwardly extending leg of which is screw-threadedly connected at 33 witha screwthread portion of the shaft 3|. To the opposite end of the shaft3| is secured a hand-wheel 34 and suitable collars prevent axialmovement of the shaft 3! relative toipthe arms 29; Therefore, 7 rotationof the hand-wheel 34 will result in rocking movement of the lever 32 andsuch move-.- ment of this lever is utilized to tilt the scraper blade ofthe assembly. For this 1atter-purpose outwardly extending channel spurs.35 are welded. l5.

" transmitt'edthrough the tubes 41 upon upward to the side surfaces ofthe member's 23'below the lever 32. An aperture isformedaintheeouteriends portion of the horizontal web of each ofthespurs 35 to slidably receive a bolt 36. The upper ends of the bolts36 are rigidly connected to yokes 31 which in turn are pivotallyconnected tothe"outer ends of the lever 32 by means of the links 38;Interposed between the yokes --31 and-thespurs "'35 andencirclingthe-bolts 36 are the :coil springs 39. An adjustable nut 40 isthreade'donto th'e lower end of each of the bolts 36below the spurs and.the springs 39 are of such strength-that normally the nuts): ar incontact with the spurs 35. However; uponth'e scraper blade'hit tin-g anunusualiobstruction the seamenna -30 against the action of the springs-39-thereby avoid ing breakage of any of the parts-of the assembly..:Extending rearwardly and downwardly 'from": the fitting 2i andrigidlysecured-thereto is a" pair of spaced parallel plates 4| adapted to enter'35 blade-with respect to the carrier frame l'l-l8;40--

aside from the adjustment now to'b'e described; is prevented.

Fitting 2| is formed withspaced parallel up= per and lower plates whichoverlie the outer-surfaces of the horizontal flanges of the beam I land;

to clamp the fitting in adjusted position along the beam II as well asto guide the fitting with respect to the beam I providefour bolts43which pass through these spaced plates and pull the"- same together.Further, I'may'provide' a series of spaced arcuately disposedapertures-44' in the beam ll to selectively receive a pin'45 whichpasses down through both the spaced; parallel plates of the fitting 2|.By loosening the bolts 43 and removing the pin 45 the fitting 2| may bemoved along the beam H in an arciiatepathconcentric about the pin 20 toany one-of a numy ber of adjusted positions and in this manner theangularity of the scraper bladewith respect to the line of travelof thepullingiveh'icle may be varied as desired to move the matterbeing-graded to the right or to the left asdesired: The pin 45 bypassing through the fitting 2 I" 'and'th'e Se lected aperture in thebeam=-H*w ill positivelymaintain the adjusted position of the 'parts.{In 7 accordance with usual practice the scraper blade 22 may be providedwith a hardened steel font-'5' ting edge member 46.

As explained more fully in the above mentioned copendin-g application,the principle carrier frame of the assembly is' arranged to be raisedand low: ered bytilting movement of the dump truck'b'ody: For'thispurpose'a pair of spaced parallel tubes 4'! project rearwardly from thetilting body'48 oflthe motortruck! Therear-endsbf th'e' mbes 47 projectthrough apertures provided in fittings 49 which are rigidly connected tothe top surface of the outer ends of the beam II, I also preferablyprovide readily removable pins 50 to interlock the tubes 41 with thefittings 49. As described in my earlier application, the tubes 41 aremounted insockets on the body 48 and are free to slide longitudinallywith respect to the body.- This facilitates the. attachment of thescraper assemblygrto the mo torztruck and upon tilting movement of thebody 48 the carrier frame onboom of the scraper assembly will be movedupwardly or downwardly as will be understood. Likewise;-- the-requiredpressure-loading of the scraper blade is accomplished by downward forcestilting; movement of the body 48.

Slidablyreceived in a socket 5! which is secured to'the frame member I8is a supporting standard 52 having a pad 53 at its lower end. Member 52is fomned-fof a tube length amass spaced apertures to selectivelyreceivea removable pin whereby the standard may b maintained in ele-'-vated inoperativeposition when the scraper -'assembly-;is-attaclied'tothe motor truck or in lower frame-supporting position when the scraperattachment is removed from the-truck as will bereadily understood.

A- lug" 55 'extends downwardly from the forward earth, shale, etc.,ahead'of the scraper blade.

Te'eth58 are carriedby a structural member-59 which is-attached to therear ends of the'arms 51Ia'nd*pivotal1y connected-with the member 59*atttransversely spaced pointsis'a pair of up wardly extending bars 60:which are apertured at spaced pointsas shown at 6| Apertured webs 621arewelded' in the channel i5 'on opposite sides of the bar'SGtoreceive-pins '63 which pass through certai-n'r f- :the apertures 6 I61,5 theilowe'r'end of whichis attached to the-piv oted scarifier frame;

It should now be apparent that I have provided anJimproVed road gradingattachment for conventional motor trucks of the load-dumping typeoperated entirely by one man, including theattachment. and. detachmentof the assembly with respecttothetruch Moreover; the scraper blade isprovided w-ith. such .:adjnstments as are necessary or desirable inlaterally distributing the mat-- ter. bein g graded. and. insefiectinganydesired crown or slope in the finished matter. the component.partslof the assembly areeasily produced from stock materials and are.of such. design that they may be expeditiously assembled,

primarily by welding, into .the .completed. attachmen-t. I V

The above specificallydescribed embodiment of In thi manner the'scarifier may'bel'securely lockedin adjusted yer-- tical .DOSltl'OIlp Toassist in raising and lowering thescarifier assembly I mayprovide awinch comprisingacable receiving drum '64 keyed'to-ashaft" BSZWhiCh?isj0ur-naled On th'eside rails-10$ handcrank lifiis provided to rotatethe shaft'*65 andconsequently the 'drum 54 to take up a cable Further,

the invention should be considered as illustrative only as obviouslymany changes may be made therein without departing from the spirit orscope of the invention. Reference should therefore be had to theappended claims in determining the scope of the invention.

What I claim is:

1. In a road grading attachment having a boom adapted to be pivotallyconnected to the frame of a motor dump truck and means adapted to becoupled with the body of the truck and movabl therewith to raise andlower said boom, the combination of a transversely extending scraperblade, means mounting said scraper blade comprising an arm extendingupwardly and forwardly underneath the rear portion of said boom, avertically disposed pivot pin carried by said boom, loose connectingmeans for anchoring the forward end of said arm to said pivot pin, meansto adjust the position of said arm and blade about said pivot pin, andmeans to tilt said blade about the longitudinal axis of said boom.

2. In a road grading attachment having a boom adapted to be pivotallyconnected to the frame of a motor dump truck and means adapted to becoupled with the body of the truck and movable therewith to raise andlower said boom, the improvement consisting of constructing said boom ofa pair of spaced side rails having means at their forward ends forpivotal attachment to said frame, a rearwardly curved beaminterconnecting the rear ends of said side rails, a fitting slidablelong said beam, a scraper blade, an arm mounting said blade and havingits forward end Divotally coupled with said boom, and meansinterconnecting said arm and fitting whereby the lateral position andangular relation of said blade with respect to said boom may be varied.

3. In a road grading attachment having a boom adapted to be pivotallyconnected to the frame of a motor dump truck and means adapted to becoupled with the body of the truck and movable therewith to raise andlower said boom, the improvement consisting of providing said boom witha rearwardly curved but generally transverse beam, a fitting slidablymounted on said beam, means to lock said fitting in adjusted position onsaid beam, a scraper blade, an arm mounting said blade and having itsforward end pivotally coupled with said boom, and means interconnectingsaid arm and fitting whereby the lateral and angular relation of saidblade with respect to said boom may be varied.

4. In a road grading attachment having a boom adapted to be pivotallyconnected to the frame of a motor dump truck and means adapted to becoupled with the body of the truck and movable therewith to raise andlower said boom, th combination of a scraper blade, an upwardly andforwardly curved arm mounting said blade and extending underneath aportion of said boom, means pivotally connecting the forward end of saidarm to the center portion of said boom whereby said arm may have limitedturning movement about longitudinal and vertical axes, a lever pivotedon the rear portion of said boom and having oppositely disposed armsconnected with laterally disposed spurs extending outwardly from saidfirst mentioned arm, and means comprising a handwheel and a screwattached thereto for rocking said lever whereby said scraper blade maybe tilted about said longitudinal axis.

5. Apparatus according to claim 4 further including yieldableinterconnections between said spurs and the arms of said lever.

5. Apparatus according to claim 4 further characterized in that saidlever is pivotally mounted on a fitting carried by the rear end portionof said boom, the means mounting said fitting of said boom beingoperative to provide for position adjustment of said fitting along anarcuate path concentric about the vertical pivotal axis of theinterconnection between said boom and the forward end of said firstmentioned arm.

7. Apparatus of the character described comprising in combination a boomadapted to be pivotally attached to a motor truck, said boom having siderails and a transverse channel member spanning said side railsintermediate the ends thereof, a yoke rigidly secured to theundersurface of the center portion of said channel member, a verticallydisposed pivot pin held a spaced points in said yoke and channel member,an anchor block pivotally mounted on said .pin, a scraper blade, ahook-like arm mounting said blade and having a bifurcated forward endpositioned about said block, a transverse pin extending through saidblock and the bifurcations of said arm forwardly of said first mentionedpin, and means to maintain said arm in adjusted positions about the axisof said first mentioned pin.

8. Apparatus according to claim 7 further characterized in that saidmeans to maintain comprises a rearwardly curved beam interconnecting therear ends of said side rails and a fitting adjustably mounted on saidbeam and engaging said arm, said transverse pin being loosely receivedin said block, and means on said fitting to tilt said arm whereby eitherend of said blade may be raised with respect to the opposite endthereof.

ADAM F. BUTCH.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,082,959 Knight Dec. 30, 19131,373,561 Howe et a1 Apr. 5, 1921 1,432,377 Adams et a1 Oct. 17, 19221,706,257 Ronning et a1 Mar. 19, 1929 1,844,167 Kiforsky Feb. 9, 19321,918,169 Arndt July 11, 1933 2,063,537 Beard Dec. 8, 1936 2,244,559Lawton June 3, 1941 2,349,361 MacDonald May 23, 1944 FOREIGN PATENTSNumber Country Date 46,375 Norway Apr. 22, 1929

